Merge pull request #705 from embark-framework/bug_fix/funding

set async limit funding

lib/contracts/provider.js

@@ -78,7 +78,7 @@ class Provider {
     if (!self.isDev) {
       return callback();
     }
-    async.each(self.accounts, (account, eachCb) => {
+    async.eachLimit(self.accounts, 1, (account, eachCb) => {
       fundAccount(self.web3, account.address, account.hexBalance, eachCb);
     }, callback);
   }